17/64" (6.80mm) Hole Size Stem Length: 9mm Flange Diameter: 20mm Black Nylon Hood and Trunk Insulation Retainers Compare With: BMW # 51-48-1-915-464, 51481915464, # 51-48-1-938-725, 51481938725, Auveco # 20270, Disco # 12859PK, 12859B, Clip Lizard # 10804, Car-Pak # 98-7864, Crest Midwest # CRX17348, Lawson # KT11696, S&R # 416100, Kimball / Midwest # 13851